What is Na2HCO3? Important knowledge about Na2HCO3.

Definition of Na₂HCO₃
Na₂HCO₃, also known as sodium bicarbonate or baking soda, is a very familiar chemical substance in everyday life. Its molar mass is 84.007 g/mol. Each molecule of Na₂HCO₃ consists of two sodium ions and one bicarbonate ion. The sodium ion is Na+ and the bicarbonate ion is HCO₃-.

Properties of Na₂HCO₃
2.1 Physical properties of Na₂HCO₃: Na₂HCO₃ is a solid, white, odorless substance, with a PH level of about 8.3, indicating that it is mildly alkaline.
2.2 Chemical properties of Na₂HCO₃: It can react with acidic substances, producing salt, water, and carbon dioxide. It can also be thermally decomposed into sodium carbonate, water, and carbon dioxide at temperatures above 50 degrees Celsius.

Common Chemical Equations of Na₂HCO₃
Na₂HCO₃ reacts with acids such as HCl, H₂SO₄, HNO₃… to produce salt, water and CO₂. For example:

• Na₂HCO₃ + HCl -> 2NaCl + H₂O + CO₂
• Na₂HCO₃ + H₂SO₄ -> Na₂SO₄ + H₂O + CO₂
• Na₂HCO₃ + 2HNO₃ -> 2NaNO₃ + H₂O + CO₂

Synthesis of Na₂HCO₃
4.1 Laboratory synthesis of Na₂HCO₃: Na₂HCO₃ can be synthesized by reacting sodium carbonate with CO₂ in water solution.
Na₂CO₃ + CO₂ + H₂O -> 2NaHCO₃
4.2 Industrial synthesis of Na₂HCO₃: In industry, Na₂HCO₃ is produced by reacting sodium chloride with ammonia, CO₂ and water under high pressure and temperature conditions. This reaction is also known as the Solvay process.